– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Tue 01 Sep Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Tue 01 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Tue 01 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryModerate rain (total 18mm), heaviest on Wed night. Warm (max 20°C on Tue afternoon, min 9°C on Thu night). Wind will be generally light. | Days 4–6 Weather SummarySome drizzle, heaviest during Fri afternoon. Warm (max 23°C on Sun afternoon, min 11°C on Fri morning). Wind will be generally light. | |||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  |  | | |  | |  |  | | | | |  | |
some clouds | some clouds | rain shwrs | rain shwrs | rain shwrs | heavy rain | light rain | rain shwrs | rain shwrs | cloudy | rain shwrs | some clouds | clear | clear | rain shwrs | some clouds | clear | clear | |
Cloud base (m) | 4650 | 1950 | 2000 | 2150 | 1550 | 550 | 650 | 850 | 1850 | 6450 | 2850 | 3100 | 6850 | 3000 | 3350 | |||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | 0.2 | 0.2 | 0.5 | 12 | 2 | 2 | 0.1 | — | 1.4 | — | — | — | 0.3 | — | — | — |
max °C | 19 | 20 | 16 | 16 | 15 | 12 | 11 | 13 | 12 | 14 | 14 | 12 | 18 | 21 | 17 | 21 | 23 | 19 |
min °C | 17 | 20 | 13 | 13 | 14 | 10 | 11 | 12 | 9 | 11 | 14 | 12 | 14 | 21 | 15 | 17 | 23 | 16 |
chill °C | 17 | 20 | 12 | 12 | 13 | 10 | 11 | 12 | 9 | 11 | 14 | 12 | 14 | 21 | 15 | 17 | 23 | 16 |
Freezing level m | 3600 | 3400 | 3000 | 2600 | 2650 | 2350 | 2200 | 2350 | 2500 | 2500 | 2550 | 2850 | 2950 | 3100 | 3150 | 3150 | 3300 | 3300 |
 | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — |
 | — | 7:50 | — | — | 7:47 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Moderate rain (total 18mm), heaviest on Wed night. Warm (max 20°C on Tue afternoon, min 9°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Some drizzle, heaviest during Fri afternoon. Warm (max 23°C on Sun afternoon, min 11°C on Fri morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport |  | ||||
SHIP5795 | |||||
SHIP7968 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.